BRAMANTI, M. A priori estimates for nonvariational operators modeled on Hörmander’s vector fields with drift. Bruno Pini Mathematical Analysis Seminar, [S. l.], v. 4, n. 1, p. 15–37, 2013. DOI: 10.6092/issn.2240-2829/4155. Disponível em: https://mathematicalanalysis.unibo.it/article/view/4155. Acesso em: 29 apr. 2024.